Stencil printing apparatus



jaw 1954 s. M. SCHWARTZ ETAL 2, 5,634

STENCIL PRINTING APPARATUS 8 Sheets-Sheet 1 Filed March 10, 1947 IN NTORS -%amu eZM hwapiz an e1 GPOSS ATTORNEY Jan. 12, 1954 s. M. SCHWARTZ ET AL STENCIL PRINTING APPARATUS 8 Sheets-Sheet 2 Filed March 10, 1947 INV SamueLM Da ieZ G NTORS chwapiz pass ATTORNEY Jan. 12, 1954 s. M. SCHWARTZ ET AL 2,665,634

STENCIL PRINTING APPARATUS Fild March 10, 1947 8 Sheets-Sheet 3 Q2 Q2 wow mm 34 w w wow INV NTORS samelMgchwariz D ieZ Grassy;

ATTORNEY 1954 s. M. SCHWARTZ ET AL 2,6 5,634

STENCIL PRINTING APPARATUS 8 Sheets-Sheet Filed March 10, 1947 iii 89 82 lNVEgTOR s Samue Z chwa 11,521 vosfi ATTORNEY Jan. 12, 1954 Filed March 10, 1947 S- M. SCHWARTZ ET AL STENCIL PRINTING APPARATUS 8 Sheets-Sheet 6 179 1 I lNV NTORS SamueZMSEfhwqniz r b iei GPO-SS ATTORNEY Jam-x 1954 s. M. SCHWARTZ ETAL 2,665,634

STENCIL PRINTING APPARATUS Filed March 10, 1947 8 Sheets-Sheet '7 lIIIllI/IIIIII I I! II I I! II //!I Ill/III I (III I/ lfII/ IIIIIIIIIIIII IIIIII/I f I Ill /7 III/III I/II/ If I l I [III I/ I III I III I INVENTORS SQEnueZM. Schwamiz Dan ieZ Gnoss ATTO R N EY' Jan. 12, 1954 s. M. SCHWARTZ ET AL 2,665,

STENCIL PRINTING APPARATUS 8 Sheets-Sheet 8 Filed March 10, 1947 luvgm'oRs amu M chwartz Dgniel Gross B ATTORNEY Patented Jan. 12, 1954 2,665,634 STENCIL PRINTING APPARATUS- Samuel M. Schwartz and Daniel Gross, Paterson, N. J., assignors to Velveray Corporation, New York, N. Y., a. corporation of New York Application March 10, 1947, Serial No. 733,565

Claims. 101120) The present invention relates to a fabric decoration and it.particularly relates to apparatus for printing and decorating textile sheets, plastic sheets and other sheet materials.

Although not limited thereto the present invention will be particularly described in its application to combined roller and flock printing of textile fabrics and particularly to novel means for accomplishing the same.

In combined roller and flock printing, considerable difiiculty is encountered in assuring registryrof the single or multi-colored roller or intaglio print with the flock print. Where chains are utilized to drive both the stencil rollers as well as the printing rollers, there is sufficient play so as to cause the printingto be out of registry.

It is therefore among the objects of the present invention to provide a novel method and means of combined roller and flock printing in which registry will be assured of the roller prints and the flock prints.

Another object is to provide an improved sheet material printing arrangement according to which artistic registered multi-colored and flock effects may be obtained upon a printed fabric.

. Still further objects and advantages will appear in the more detailed description set forth below, it..being understood, however, that this more detailed description is given by way of illustration and explanationonly and not by way of limitation, since various changes therein may be made by thoseskilled in the art without departing from the scope and spirit of the present invention.

In accomplishing the above objects it has been found most satisfactory to provide a main roller for carrying thefabricor sheet material to be decorated. Around the periphery is located a plurality of printing and stencil rollers. These various rollers are driven through gear trains from a common source without intervening chain connections.

. In one preferred form the main drive shaft is driven by a chain which in turn has a supplemental drive shaftC driving a stencil roller as well as a main gear which in turn drives a number of intaglio printing rolls. The drum itself which carries the fabric is driven by contact with tion, these, inter alia, may be better understood by referring to the following description con-X sidered in connection with the accompanying drawings forming parts thereof in which? Fig. 1 is a front elevational view of the combined stencil and roller printing mechanism with one of the roller printing elements partly broken away;

Fig. 2 is and end elevational view taken from line 2--2 of Fig. 1;

Fig. 3 is a top plan view of the combined roller printing and stencil arrangement; 6

Fig. 4 is a vertical sectional view taken upon the line 44 of Fig, 2;

Fig. 5 is a vertical sectional view taken from the line 5-5 of Fig. 1; i

Fig. 6 is a detailed, fragmentary vertical sectional view of the stencil roller upon an enlarged scale as compared to Figs. 1 to 4;

Fig. 7 is a transverse sectional view of the stencil cylinder upon the line 11 of Fig. 6;

Figs. 8 to 15 are respectively fragmentary end plan views and fragmentary sectional views of the four successive printing rollers, Figs. 9, 11, 13 and 15 being respectively fragmentary sectional views upon an enlarged scale taken upon. the lines 99, Il-ll, I3l3 and l5-l5 of Figs. 8, 10, 12 and 14;

Figs. 18 and 19 are respectively a fragmentary end plan view and a transverse sectional view upon the line l9--l9 of Fig. 18;

Fig. 20 is a fragmentary top plan view of the resultant fabric following the flock printing and multi-color intaglio printing; 6

the stencil roll as well as the printing rolls which apply one or more colored designs by intaglio to the fabric.

. The invention also consists in certain new and original features of construction and combination of parts hereinafter set forth and claimed and as to its other objects, features and advantages, the mode of operation and manner of its organiza- Fig. 21 is a transverse sectional view upon the line 2I-2l of Fig. 20 of the combined :fiock and intaglio printed fabric; 6

Fig. 22 is a side elevational view diagrammatiof the combined stencil and roller printer device in a flock printing apparatus;

Fig. 23 is a front elevational view of an alternative combined printing and flocking arrangement, showing an alternative drive arrangement for the stencil and roller printing cylinders;

the line 25-45 of Fig. 6 upon an enlarged scale as compared to Fig. 6 showing the head ar-,

rangement with top and side rollers for holding the stencil cylinder or drum in position;

aeeacse Fig. 26 is a fragmentary end perspective view of the aligning head and stencil roller of Fig. 25 upon a small scale as compared to Fig. 25; and

Fig. 27 is a fragmentary end perspective view of the stencil roller showing an alternative tensioning device for the doctor blade.

Referring to Figs. 1 to 4, and also Fig. 22 the printing mechanism includes a main carrier drum or cylinder A with a supporting structure B, the stencil cylinder C and the engraved printing rollers D, E, F and G.

The mechanism is driven from a motor or pulley (not shown) connected to the shaft I. On the shaft 7 is the sprocket wheel 3 fixed on the shaft T by the collar 9. The wheel 8 drives the link belt is (see Fig. 4) which drives the sprocket wheel II. The sprocket II has a collar I8 and a set screw It which fixes :it to the shaft I2. The shaft 12 has bearings I 3 and .I the bearing I3 being mounted in the member I'Ei which is carried by the bolts H on the stand It.

The shaft I2 (see Figs. 1 and 4) extends through the bearing I i in the standard 2! of the supporting structure 22 and the bearing i4 is mounted in the other supporting structure At the end of the shaft I 2 is positioned the pinion 2'4.

'The supporting structure B as shown in Figs.

l, 2 and 4 has the blocks 25 supporting the frame members 2| and 23 having the legs 26 and 21. The bearing !4 is positioned in the block 28 extending upwardly from the bridge 23 of the side member 23 "(see Fig. 2).

The pinion 24 as shown in Figs. 1, 2 and 4, meshes with and drives the gear 36 mounted on the shaft 3|. The shaft SI extends through the bearing 32 on the structure 23 and it carries the gears 33 and 34 by the collars 36 and 31. Then it extends through the structure it at 3'5 and at its end carries the gear 38.

The gear 38 meshes with and drives idler gear 39 (see Fig. which in turn meshes with and drives the gears '49, M, 42 and 43. The idler gear 39 is mounted on the stud shaft lfii which has a bearing 45 in the bracket 48. 46 is bolted to the frame 2'! at 241.

The gears 33 and 34 (see Fig. 4) mesh with the large wheel gears 46 and M, which gears are fixed upon and turn with. the shaft it. The shaft '48 has reduced diameter and extensions 49 and 5B which have bearings EI and 52 in the bearing mounts 53 and 54. The bearing mounts 53 and 54 may slide up and down in the guides 6| and 62 in the structures B and may be adjusted by the adjusting screws 55 and '56 which are threaded in the blocks El and 58 and which may be turned by tools inserted in the adjusting heads 59 and 60.

The gears 46 and '47 mesh with and drive the ring gears ES and 64 which are mounted on the end extensions 65 and 66 of the tubular members 61 and 68 of the cylindrical stencil shell E6.

The cylindrical shell I6 is carried by the webs 1|, I2 and I3 (see Fig. 4) which have bearings at I4, I5 and I6 on the shaft 48. The shell ill is covered by a relatively thick layer I7 of rubber or a similar resilient material which extends over the ends of the shell "I? at 18 and over the sides of the webs 'II and i3. Wrapped around the outside of the shell iii and on the rubber H is the double canvas cover 86. The fabric or sheet material to 'be decorated, that is both roller and flock printed is carried by the cloth-rubber covered rotating shell it.

The construction of the adhesive applying'stem The bracket a forwardly extending portion 84 leaving only the narrow gap 85 for the adhesive 66 to pass through theepenings 8I and onto the sheet material therebelow.

The lower end 8I-of the doctor blade 82 scrapes the inside of thecyl inder E9 preventing any adhesive solution from passing. The upper end 88 of the blade 82 is bent over the member 8?, while the upper end of the blade 83 extends to the inside "face of the cylinder -59 at til.

The space between the blades 82 and 83 adjacent the ends o'fth'e cylinder 169 is closed by the dams or closures "9!. The rotating cylinder 59 is held-down 'againstthe canvas facing 88 of the shell in by thea'rm's 92 having the rollers ies' which arms are pivotally mounted at 81! on the brackets 95 mounted by'the feet 91 and the bolts 96 on the top er of the structure members B. The rollers 93 ride on the reduced diameter portions 35 and 66 outside of the ring gears "63 and G4 and they are biased downwardly by the weights 98.

The blades 82 and 83 are held down by the arms 99 and Iiiii. The arm '99 is'ben't downwardly at Iiii. The bent section Hi2 ispiv'otall'y mounted at Hi3 on the rod Hi4. Therod section I232 passes over the section I05 of the blade I06. The end of therod 99 is provided with an eye I'Ii'I receiving the member I08 which carries the ring lei attached to the scale I I0.

The pressure may be regulated by pulling down upon the chain I II until the point'er I I2 reaches the appropriate graduation on the scale H3. The retainer member II-fl will retain the chain I II in any desired position. 7

p The rod lei! is pivotally mounted at '5 on the bracket member 95. It is provided with a cup shaped receptacle H6 receiving the rod III at its inside en'd. At its outside end II8 it fits below the head N9 of the rod I20 which passes through the block I25. The'spring I22 encircles the rod I29 and presses the rod I18 upwardly. 7

Referring to the engraved printing rollers D to G, these rollers are provided with diverse engravings or intaglio engravings I58, I5I, I52 and I53 as best shown in Figs. 8 to 15. These rollers D to G carry printing ink of different color and deposit it upon the sheet textile or plastic material before it passes below the stencil roller C.

As shown best in Fig. '2 each roller D to G is provided with a trunnion I54 which is received in the half bearing member I55 in the sliding block I56. The block I56 slides in the guides I51, I58 and I59. The block I56 is pressed "down by the screw I68 which is threaded through the collar IEI in the U-member I62 the arms of which form the guides I57 and I58. The lock nut I63 fixes the block 556 in position after the adiustment has been made by the hand wheel To assure registry of the engraved printing by the rollers D to G the shafts or trunnion's I65 at the left side of the rollers D to G are provided with extensions It's. The extensions I66 have the ridged recesses I67 which engage the worm member 188. The worm member 108 is carried by the bars 189 and 110 on the cross members 111. The head 112 may be turned by insertion of a pin thereinto.

As shown in Fig. 22, the fabric 250 is taken off the roller 251 turning on the shaft 252 and tensioned by the weight or brake 253. The fabric 250 then passes over the tensioning rollers 254 and over the rollers 255 and 258 to the drum A.

The paper 249 passes from the roller 251 onto the shaft 258 where it is tensioned by the weight 259. Then it passes over the rollers 280 and 261 onto the drum A.

From the drum A the paper 264 passes over the roller 265 onto the paper take-up roller 268 tuming on the shaft 261. I The fabric 250 then passes at 282 to the flocking arrangement 283.

The flocking arrangement has the hopper 258 with the agitator 289 and the control brush 210 and baiile 211. The flock 248 then passes onto the screen 212 driven by the eccentric 213 on the pivot 214. The excess flock 248 passes to the pan 241 where it is pickedup by the back flocking rollers 215 and 218 and thrown up against the rear of the fabric with assistance of the baflie 211. The beater elements 218 will beat the rear of the fabric assuring permanent attachment of the flock 248.

In Fig. 23, the floor 300 supports the pedestals 301 and 302 which carry the shaft 303. The shaft carries the pulley 304 which is driven by the belt 305. The gear 305 turns with the shaft 303 and drives the gear 301 and the shaft 308. The gears 301 and 309 mesh with and turn the gears 310 and 311 on the shaft 315. The rollers 313 are turned by the gears 3l2 meshing with the gears 310 and 311. The gears 318 and 328 on the stencil 320 and 311 and 321 on the drum. 319 are in mesh and turn together.

Fig. 24 diagrammatically shows one manner of a feeding printing paste or solution to the printing rollers D, E, F and G to which the invention is by no means restricted.

InFig. 24 and also in Fig. 1 in which the device of Fig. 24 is shown in fragmentary form as applied to a printing roller G, the doctor blade 400 presses closely against the printing roller G. Between the doctor blade 400 and the printing roller G is placed the printing paste or solution 404 which is held in place by the dams 405. The doctor blade 400 extends into and is held in position by means of the blocks 401. The blocks 401 contact the blocks 408 carrying the outwardly extending arm 403. The arm 403 is provided with an eye 402 from which is suspended the rod 4| 0 carrying the weight 401. If desired, a spring adjustment can be arranged as shown at W in Figs. 2 and 6 to control the pressure of the doctor blade 400 against the printing roller G.

In Fig. 27 is shown an alternative arrangement Y to replace the arrangement W of Figs. 2 and 6. In Fig. 27 the aluminum head 89 which carries the doctor blade 82 is in turn attached to the bar 450 which fits in the slot 451, in the receiver 452 mounted at 453 on the frame structure B. The end of the blade 454 is engaged by the hook member 455 which is connected at 458 to one element of the spring tensioning device 451. The spring tensioning device has a movable pointer 458 indicating the amount of tension applied to the doctor blade 82. The cable member 459 may be taken up by the ratchet 480 and the pawl 451. The ratchet 460 is turned by the hand wheel 452 to adjust the tension as indicated by the pointer 458.

of the main carrier drum A alongside of which they are closely positioned.

The main gear 39 then drives the printing rollers D, E, F and G, while the side gears and 41 drive the stencil roller C. These rollers C, D, E, F and G in turn drive the main drum A upon which the fabric is carried. This arrangement will give assurance of accurate register of the one or more color roller prints with the stencil and flock application.

In the alternative construction of Fig. 23 everything is coupled to the main drum 319 which drives the stencil roller 320 through the gears 318 and also drives the various printing rollers 313 through the main gears 310 and 311 and the pinions 312. Here again it will be noted that the main shaft 303, as well as the intermediate shaft' 308, extend entirely across the machine.

The principal features of the present invention which enable successful combined roller A and flock printing are as follows:

(a) The arrangement as shown in Fig. 4. in-

which the main drum A is closely embraced by the large gears 46 and 41 which drive the stencil cylinder C. The drum A is at the same time in-- dependently and freelyrotatable on the shaft 48. The drum A is driven by the pressure of and contact with the stencil roller C as well as the v scale in Figs. 4 and 26, and in enlarged scale in Fig. 25 having side and top contact rollers 93 and a weight 88 correctly positioning the stencil roller C both vertically and laterally while it is being driven by the gears 46 and 41 through the gears 63 and 84. The head V is adjustable to take different size stencil rollers C because of the swinging arm 92. The rollers 93 ride continuously upon the stencil end portions and 66 and inturned side portions 245, and

(e) The adjustable tensioning device W of Figs. 2 and 6 and the alternative construction Y of Fig. 27 for adjustably controlling the tension on the doctor blade 82.

As many changes could be made in the above mechanism method and means for producing a panne efiect and many widely different embodiments of this invention could be made without departing from the scope of the claims, it is intended that all matter contained in the above description or shown in the accompanying drawings shall beinterpreted as illustrative and not in a limiting sense,

What: is claimed is:::

1. In a hollow perforated sheetmetal stencil cylinder for flock printing, two blades positioned within and longitudinally extending through said cylinder pressed closely into contact with the. interior of said cylinder and forming a well Within which the flock printing adhesive is received, one of said blades serving as a doctor blade and adjustable means to control the pres- I sure. of said doctor blade against the interior of said cylinder, said means including an alu1ninum head carrying said doctor blade, at bar at tached to said aluminum head and extending beyond the ends of said cylinder, presser arms extending over and across the ends of said bars and. adjustable resilient means to draw said presser. arms downwardly, said adjustable resilient means including a graduated spring scale with a pointer to register tension, a cable connected to said spring scale and a ratchet and pawl. controllably to adjust said scale attached to. said cable.

2. In a hollow perforated sheet metal stencil cylinder for flock pinting, said cylinder having reduced diameter end portions with inturned edge flanges and roller means having double roller axes which are at right angles to one another,.to ride upon said end portions and inturned end flanges to hold said stencil cylinder in correct position during operation, said roller means including a weighted swinging member.

3. In a flocking machine having a frame and a perforated. printing cylinder to apply an adhesive to a strip of fabric to be subsequently flocked, a hollow cylinder of thin sheet metal provided with a perforated design thereon, ring gears mounted on the ends of said cylinder and meshing with supporting actuating gears, said cylinder having cylindrical extensions beyond said ring gears and the ends of saidextensions having inturned flanges, a plurality of double rollers having axles parallel to and perpendicular tothe axis of the hollow cylinder, said rollers. being pivotally mounted on said axles and one set of the rollers riding on the periphery of said extensions and the other rollers riding on said, flanges, said rollers being provided with weights to press them against the extensions of said cylinder.

4. In a flocking machine having a frame and a perforated. printing cylinder to apply an adhesive to a strip of fabric to be subsequently flocked, a hollow cylinder of thin sheetmetal provided with a perforated design thereon, ring inder'to guide said projections, said adjustablespring means including a spring tensionin'g scale device and a ratchet to take up tension on said spring.

I 5. In a textile flock printing machine, a rotating hollow cylinder having ring gearsmounted on the outside ends thereof, said cylinder having extending longitudinally therethrough at thev lower part thereof two. blades converging at the interior surface of the cylinder to form a pool.

of adhesive, rollers pressing down on the upper part of said cylinder, arms carrying rollers pivotally mounted on said machine, said blades having extensions beyond said cylinder, arms cooperating with said blades to hold said blades down against the interior face of said cylinder, adjustable means to regulate the pressure of said blades against said cylinder, said cylinder having end extensions beyond said ring gears, rollers riding on the peripheries and ends of said extensions to hold said cylinder in correct positions, and a. weighting member to weight said last mentioned rollers.

SAMUEL M. SCHWARTZ.

DANIEL GROSS.

References Cited in the file of this patent UNITED STATES PATENTS Schwartz et a1. June 22, 

